Preface.- Organization.- Chapter 1. Developing a Method for Measuring the Failover Times of First Hop Redundancy within Video Networks.- Chapter 2. Desktop application developed by open source tools for optimizations in cases of natural hazards and ﬁeld response. Chapter 3. Data optimizations on Kresna Fire (2017) as inputs for WFA simulations.- Chpater 4. Solving Sorting of Rolling Stock Problems utilizing pseudochain structures in Graphs, etc.